Little Rock District News Releases

MKARNS Nav Notice SWL 26-17 Scheduled Lock Closure (Multiple Locations)

Press Operations — Wed, 29 Apr 2026 15:08:42 GMT

A partial lock closure is scheduled for James A. Trimble Lock (No.13) NM 292.8, Ozark Jetta-Tayor Lock (No. 12) NM 256.9, Dardanelle Lock (No. 10) NM 205.5, Arthur V. Ormond Lock (No. 9) NM 176.9, Toad Suck Lock (No. 8) NM 155.9, and Murray Lock (No. 7) NM 125.4 beginning June 15th, 2026, through September 30th, 2026. During this time, the Locks will be closed daily between the hours of 7:00 a.m. and 7:00 p.m. The Locks will be opened to traffic each night between the hours of 7:00 p.m. and 7:00 a.m., however a 70-ft width restriction will be in place.

MKARNS Nav Notice SWL 26-16 Caution Advisory NM 291.6 I-49 Bridge

Press Operations — Tue, 21 Apr 2026 20:02:32 GMT

Mariners are advised that bridge construction falsework is located in the river at NM 291.6, downstream of James W. Trimble Lock and Dam (No. 13). These obstructions will be in place intermittently during the I-49 Bridge construction and may be submerged depending on river conditions.

MKARNS NAVNOT 26-15 Lock 9 Repair Closure

Press Operations — Tue, 14 Apr 2026 18:07:05 GMT

Mariners are advised that Arthur V. Ormond (No. 9) NM 176.9 will be closed to traffic beginning at 6:00 a.m. until 6:00 p.m. on April 21st, 2026. The lock closure is required to facilitate ongoing work on the miter gate operational equipment.

MKARNS Nav Notice 26-14 Lock 7 Tow Haulage Return to Service

Press Operations — Tue, 31 Mar 2026 16:20:19 GMT

The tow haulage equipment at Murray Lock (No. 7) NM 125.4 has returned to service.

MKARNS Nav Notice No. 1-2026

Press Operations — Tue, 10 Mar 2026 14:23:00 GMT

1. As a result of partnering efforts with navigation stakeholders, a consolidated Notice to Navigation Interests has been prepared for the McClellan-Kerr Arkansas River Navigation System (MKARNS). The intent is to provide consistency by reviewing and informing current district regulations with a joint notice that will be updated annually. The notice is applicable to the Little Rock (SWL) and Tulsa (SWT) Districts. 2. The basic document includes policies of general application to the described areas within the Southwestern Division, while the appendices cite policies applicable to MKARNS projects from Navigation Mile (NM) 0 to NM 445. Also included as an appendix is the Code of Federal Regulations containing the "Little Red Book" of navigation regulations prescribed by the Secretary of the Army. 3. Comments on how we may improve this notice may be sent to: U.S. Army Corps of Engineers - Little Rock District, ATTN: CESWL-OP-OM, 700 W. Capitol Avenue, P.O. Box 867, Little Rock, AR 72203-0867 or you may e-mail CESWL-OP-OM@usace.army.mil.

MKARNS Nav Notice SWL 26-12 Lock 2 Tow Haulage Return to Service

Press Operations — Thu, 05 Mar 2026 15:16:42 GMT

The tow haulage equipment at Lock No. 2 (NM 13.3) has been repaired and returned to service.

MKARNS Nav Notice SWL 26-11 MPLD NavPass Open

Press Operations — Tue, 17 Feb 2026 17:20:59 GMT

Due to increased river elevations, the crest gate dam at Montgomery Point Lock and Dam (NM 0.5) is lowered and the navigation pass is open.

MKARNS Nav Notice SWL 26-10 MPLD Reopened - Width Restrictions

Press Operations — Thu, 12 Feb 2026 21:19:45 GMT

Mongomery Point Lock & Dam (NM 0.5) has reopened to navigation traffic 24-hours per day. However, a 70-ft width restriction remains in place. All mariners are advised to exercise extreme caution when transiting the lock. Tows should align with the land wall when nearing the downstream approach to avoid contact with the downstream river wall miter gate. Additionally, mariners should continue to expect longer than normal lockage times. These locking instructions will remain in place until further notice.

MKARNS Nav Notice SWL 26-09 MPLD Partial Lock Reopening - Width Restrictions

Press Operations — Thu, 12 Feb 2026 16:30:12 GMT

Due to ongoing hydraulic system repairs on the downstream river wall miter gate, Montgomery Point Lock & Dam (NM 0.5) is operating under the following restrictions until further notice: • Daily Closure: The lock will be closed to all traffic from 6 a.m. to 6 p.m. daily to allow for repair work. • Limited Opening: The lock will be available for transit from 6 p.m. to 6 a.m. daily. • Width Restriction: A 70-foot width restriction is in effect during operating hours.

MKARNS Nav Notice SWL 26-08 MPLD Unscheduled Closure

Press Operations — Wed, 11 Feb 2026 16:42:29 GMT

Due to issues with the hydraulic system, Montgomery Point Lock and Dam (NM 0.5) is currently closed to traffic. Crews are onsite investigating the issue and will reopen the lock as soon as the repairs are completed. A subsequent Navigation Notice will be issued when the lock is reopened.

MKARNS Nav Notice SWL 26-07 MPLD Nav Pass Closed

Press Operations — Mon, 09 Feb 2026 17:10:03 GMT

Due to falling river elevations, the crest gate dam at Montgomery Point Lock and Dam (NM 0.5) is in operation and the navigation pass is closed. All vessels are required to pass through the lock until further notice.

MKARNS Nav Notice SWL 26-04 MPLD NavPass Closed

Press Operations — Fri, 23 Jan 2026 22:03:26 GMT

MKARNS Nav Notice SWL 26-03 MPLD NavPass Open

Press Operations — Tue, 20 Jan 2026 20:51:07 GMT

Due to increased river elevations, the crest gate dam at Montgomery Point Lock and Dam (NM 0.5) is lowered and the navigation pass is open. When the Montgomery Point Lock and Dam tailwater elevation drops below 115 ft, the navigation pass will be closed.

MKARNS Nav Notice SWL 26-02 Lock Closure Forecast - 2026

Press Operations — Wed, 07 Jan 2026 16:27:28 GMT

The purpose of this Navigation Notice is to provide forecasted lock closures for the 110-ft Stoplog Conversion projects in 2026. The information below is considered tentative and the closure details could change depending on site conditions, construction means and methods and other variables.

MKARNS Nav Notice SWL 25-91 MPLD Nav Pass Closed

Press Operations — Wed, 31 Dec 2025 18:47:25 GMT

MKARNS Nav Notice SWL 25-90 MPLD Nav Pass Open

Press Operations — Tue, 30 Dec 2025 16:51:51 GMT

MKARNS Nav Notice SWL 25-89 Sailing Instructions NM 237.1 to NM 238.3

Press Operations — Thu, 18 Dec 2025 21:23:47 GMT

Due to shoaling, mariners are advised that until further notice, both upbound and downbound tows should favor the red buoys from NM 237.1 to NM 238.3.

MKARNS Nav Notice SWL 25-87 MPLD Scheduled Lock Closure

Press Operations — Sun, 07 Dec 2025 00:13:40 GMT

Montgomery Point Lock & Dam (NM 0.5) will be closed to traffic from 7 a.m. to 5 p.m. on December 8, 2025. The purpose of the closure is to facilitate dive crews to clear any remaining debris from the behind the downstream miter gates.

MKARNS Nav Notice SWL 25-85 MPLD Reopened - Width Restriction

Press Operations — Sat, 06 Dec 2025 00:19:00 GMT

Mongomery Point Lock & Dam (NM 0.5) has reopened to navigation traffic. However, the downstream river wall miter gate is failing to recess due to an obstruction behind the gate. Crews are continuing to work to resolve the issue.

MKARNS Nav Notice SWL 25-84 Sailing Instructions Lifted

Press Operations — Fri, 05 Dec 2025 19:23:56 GMT

The sailing instructions for the downstream approach at Norrell Lock & Dam NM 10.3 to NM 9.6, noted in Nav Notice SWL 25-81, have been lifted.